<template>
  <div class="app-container">
    <el-form label-width="120px">
      <el-form-item label="讲师名称">
        <el-input v-model="teacher.name" />
      </el-form-item>
      <el-form-item label="讲师排序">
        <el-input-number v-model="teacher.sort" controls-position="right" :min="0" />
      </el-form-item>
      <el-form-item label="讲师头衔">
        <el-select v-model="teacher.level" clearable placeholder="请选择">
          <!--
数据类型一定要和取出的json中的一致，否则没法回填
因此，这里value使用动态绑定的值，保证其数据类型是number
-->
          <el-option :value="1" label="高级讲师" />
          <el-option :value="2" label="首席讲师" />
        </el-select>
      </el-form-item>
      <el-form-item label="讲师资历">
        <el-input v-model="teacher.career" />
      </el-form-item>
      <el-form-item label="讲师简介">
        <el-input v-model="teacher.intro" :rows="10" type="textarea" />
      </el-form-item>
      <!-- 讲师头像：TODO -->
      <!-- 讲师头像 -->
      <el-form-item label="讲师头像">
        <!-- 头衔缩略图 -->
        <pan-thumb :image="teacher.avatar" />
        <!-- 文件上传按钮 -->
        <el-button type="primary" icon="el-icon-upload" @click="imagecropperShow = true">更换头像 </el-button>
        <!--
v-show：是否显示上传组件
:key：类似于id，如果一个页面多个图片上传控件，可以做区分
:url：后台上传的url地址
@close：关闭上传组件
@crop-upload-success：上传成功后的回调 -->
        <image-cropper v-show="imagecropperShow" :width="300"  :height="300" :key="imagecropperKey" :url="BASE_API + '/eduoss/fileoss'" field="file" @close="close" @crop-upload-success="cropSuccess" />
      </el-form-item>
      <el-form-item>
        <el-button :disabled="saveBtnDisabled" type="primary" @click="saveOrUpdate">保存</el-button>
      </el-form-item>
    </el-form>
  </div>
</template>

<script>
import ImageCropper from '@/components/ImageCropper'
import PanThumb from '@/components/PanThumb'

import teacher from '@/api/teacher/teacher.js'
export default {
  components: {
    ImageCropper,
    PanThumb
  },
  data() {
    return {
      teacher: {
        name: '',
        sort: 0,
        level: 1,
        career: '',
        intro: '',
        avatar: ''
      },
      imagecropperShow: false,
      imagecropperKey: 0,
      BASE_API: process.env.BASE_API,

      saveBtnDisabled: false // 保存按钮是否禁用,
    }
  },
  created() {
    this.initFn()
  },
  watch: {
    //监听路由，路由发生变化就执行以下代码
    $route(to, from) {
      this.initFn()
    }
  },
  methods: {
    cropSuccess(data){
      console.log(data)
      this.imagecropperShow =false
      this.teacher.avatar = data.url
    },
    close() {
      this.imagecropperShow = false
      this.imagecropperKey++
    },
    initFn() {
      if (this.$route.params.id) {
        this.getTeacherFn()
      } else {
        this.teacher = {}
      }
    },
    getTeacherFn() {
      teacher.getTeacher(this.$route.params.id).then(res => {
        this.teacher = res.data.teacher
      })
    },
    saveOrUpdate() {
      this.saveBtnDisabled = true
      if (this.$route.params.id) {
        this.updateTeacherFn()
      } else {
        this.saveData()
      }
    },
    saveData() {
      teacher
        .save(this.teacher)
        .then(res => {
          return this.$message({
            type: 'success',
            message: '保存成功!'
          })
        })
        .then(res => {
          this.$router.push('/teacher/table')
        })
    },
    updateTeacherFn() {
      teacher
        .updateTeacher(this.teacher)
        .then(res => {
          return this.$message({
            type: 'success',
            message: '保存成功!'
          })
        })
        .then(res => {
          this.$router.push('/teacher/table')
        })
    }
  }
}
</script>

<style></style>
